Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995rnaoj...2..685i&link_type=abstract
Rep. Natl. Astron. Obs. Jpn., Vol. 2, No. 4, p. 685 - 695
Astronomy and Astrophysics
Astronomy
Optical Systems: Meridian Circles
Scientific paper
The forced oscillation of a liquid in a cylindrical vessel is investigated. The authors mean that system identification are determination of the model parameters for the system from measurement data. The system is a mercury basin to be used for calibrating the astronomical zenith for the Photoelectric Meridian Circle (PMC). The analytic model is the long wave with correction term for viscosity. The oscillation is transmitted from the pier of PMC to the mercury. The frequency response characteristics of the sloshing amplitude and phase were experimentally obtained by the cross spectrum method. The authors identified the frequency response as the transfer function of the analytical model.
Ishizaki Hideharu
Matsuda Kazuhide
Mikami Yoshitaka
Suzuki Sadaomi
Takahashi Ryoji
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